David James Duncan said this quote

They were no longer standing the way he'd stood them, no longer engaged in the glorious basking that overwhelmed him on the headland. They were leaning toward the light now, craning toward it. He’d been dead wrong about the blitheness. The buttercups now seemed to know — to understand with that purely physical knowledge that all living things possess — that something was wrong. Their craning was like a cry: they were calling out with all the body language they possessed for a life or a place they had no minds with which to remember.